Home lock calculator
Lock Model Lookup & Smart-Lock Match
Pull catalog specs for 84 mainstream locks and get matched smart-lock paths.
Result
Smart-lock paths
Keyway
ANSI grade
Catalog backset
Formula
Calculation logicLook up the lock before shopping smart
Read the model from the hardware
Brand and model sit on the lock face, the latch plate edge, or the original box. Big-box store brands print it inside the battery cover or on the receipt — photograph it before the box goes missing. Fifty mainstream US residential models are in the catalog: Schlage, Kwikset, Yale, Defiant, Baldwin, August, and common retrofit kits.
Trust the tape over the catalog
Catalog specs describe the model line; the door decides. A deadbolt on a thick slab still needs a thick-door kit, and a painted-over bore still measures wrong. Enter measured thickness and backset alongside the model — the verdict checks both before recommending a path.
Retrofit or full replacement
Retrofit kits (August Wi-Fi, Yale Approach, Kwikset Convert) keep the existing deadbolt and keyway: cheapest when prep is standard. Full replacement (Encode Plus, Assure 2, Halo) resets keyway and grade: right when hardware is worn, mixed-brand, or due for an upgrade.
Verify before you buy
- Read brand and model from the hardware or box
- Confirm thickness and backset with calipers and tape
- Match retrofit kits to the deadbolt, not knobs or levers